matrix values as text on plot

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Paul
Paul on 23 Feb 2012
Commented: Saeed Bello on 20 Dec 2016
Hello all,
I don't really know how to ask this question, but I'll try my best.
From a 20*20 matrix I used griddata and then pcolor to plot a figure just like this one:
I now would like to insert the matrix as text on top of the figure (just like you can see in the link above).
Of course I can use the "text" function and insert all the values one by one. But I'm sure there is an easyer way to do it!
I tried using clabel, but I couldn't find a way to label all the matrix values.
Your help would be much appreciated!
Paul

Accepted Answer

Andrew Newell
Andrew Newell on 23 Feb 2012
You could do all the text commands in a loop, for example:
A = randn(20);
x = linspace(0,1,20); y = x;
pcolor(x,y,A); colormap summer
for ii=4:4:16
for jj = 4:4:16
text(x(ii),y(jj),num2str(A(ii,jj),2))
end
end
  1 Comment
Paul
Paul on 23 Feb 2012
Thank you Andrew for your reply.
After I asked the question I spent some more time thinking about it and found the exact solution for my problem. I hadn't had time to put it here.
Sometimes the best solution is the simpler.
Best regards,

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More Answers (1)

fei
fei on 28 Jan 2015
Hi Paul.
i'm facing the same problem.
Can you kindly share with me how do you overcome it?
Thank you in advance
  1 Comment
Saeed Bello
Saeed Bello on 20 Dec 2016
The answer has been answered by Mathswork Support team on the link below: https://www.mathworks.com/matlabcentral/answers/91384-how-can-i-display-the-numerical-values-of-each-cell-as-text-in-my-pcolor-plot

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